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Genetic research

Insights into the Molecular Mechanisms of Pork Quality Revealed in Groundbreaking Genomics Research

Strategic Insights

— 1 min read

Groundbreaking genomics research conducted by a team of scientists at Yunnan Agricultural University has shed new light on the molecular mechanisms governing the quality of pork, specifically the psoas major muscle (PMM). The study, which combined physicochemical characteristics, transcriptomics, and proteomics analyses, identified key genes and pathways responsible for the differences in meat quality between PMM and other muscles.

Key Takeaways:

  • The research team found that PMM had lower fat content, better amino acid compositions, and greater tenderness compared to longissimus dorsi muscle (LDM) and semimembranosus (SM).
  • A total of 2,320 differentially expressed genes (DEGs) and 1,562 differentially expressed proteins (DEPs) were identified, with 22 DEGs/DEPs co-expressed in both PMM vs. LDM and PMM vs. SM groups.
  • The study highlighted the crucial role of amino acid (AA) and lipid metabolism in the meat quality differences among muscles from different parts.
  • Ten genes, including ACADM, ETFB, MYL3, COX5A, CS, HADH, DLD, NDUFS8, NDUFS3, and NDUFAB1, were identified as potential key genes specific to the regulation of synthesis and metabolism of AAs and lipids in skeletal muscle.
  • The findings provide a comprehensive understanding of the molecular mechanisms underlying pork quality and serve as a foundation for genetic improvement of pork quality and pork grading.

Statistics:

  • 2,320 differentially expressed genes (DEGs) were identified in the study.
  • 1,562 differentially expressed proteins (DEPs) were identified in the study.
  • 22 DEGs/DEPs were co-expressed in both PMM vs. LDM and PMM vs. SM groups at the two-omics levels.
  • 10 genes were identified as potential key genes specific to the regulation of synthesis and metabolism of AAs and lipids in skeletal muscle.

Sources:

  • Integrative transcriptomic and proteomic analyses of different muscles reveal the molecular mechanism of pig psoas major muscle as a high eating and nutritional quality meat. BMC Genomics, 2025;26(1):939.

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